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selftests/mm: fix -Wmaybe-uninitialized warnings 

A few -Wmaybe-uninitialized warnings show up when building the mm tests
with -O2.  None of them looks worrying; silence them by initialising the
problematic variables.

Link: https://lkml.kernel.org/r/20241209095019.1732120-3-kevin.brodsky@arm.com
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Keith Lucas <keith.lucas@oracle.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kevin Brodsky 2024-12-09 09:50:07 +00:00 committed by Andrew Morton
parent 8e36b2945e
commit 516fb51638
4 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/testing/selftests/mm/ksm_tests.c
View File

@ -776,7 +776,7 @@ err_out:
int main(int argc, char *argv[])
{
int ret, opt;
int ret = 0, opt;
int prot = 0;
int ksm_scan_limit_sec = KSM_SCAN_LIMIT_SEC_DEFAULT;
int merge_type = KSM_MERGE_TYPE_DEFAULT;

2
tools/testing/selftests/mm/mremap_test.c
View File

@ -384,7 +384,7 @@ out:
static long long remap_region(struct config c, unsigned int threshold_mb,
char *rand_addr)
{
void *addr, *src_addr, *dest_addr, *dest_preamble_addr;
void *addr, *src_addr, *dest_addr, *dest_preamble_addr = NULL;
unsigned long long t, d;
struct timespec t_start = {0, 0}, t_end = {0, 0};
long long start_ns, end_ns, align_mask, ret, offset;

2
tools/testing/selftests/mm/soft-dirty.c
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@ -128,7 +128,7 @@ static void test_mprotect(int pagemap_fd, int pagesize, bool anon)
{
const char *type[] = {"file", "anon"};
const char *fname = "./soft-dirty-test-file";
int test_fd;
int test_fd = 0;
char *map;
if (anon) {

2
tools/testing/selftests/mm/uffd-unit-tests.c
View File

@ -1122,7 +1122,7 @@ uffd_move_test_common(uffd_test_args_t *targs, unsigned long chunk_size,
char c;
unsigned long long count;
struct uffd_args args = { 0 };
char *orig_area_src, *orig_area_dst;
char *orig_area_src = NULL, *orig_area_dst = NULL;
unsigned long step_size, step_count;
unsigned long src_offs = 0;
unsigned long dst_offs = 0;